\begin{table}[htbp]\centering
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\caption{Efficacy index -- Subcomponents}
\begin{tabular}{l*{7}{c}}
\toprule
                    &\multicolumn{1}{c}{(1)}&\multicolumn{1}{c}{(2)}&\multicolumn{1}{c}{(3)}&\multicolumn{1}{c}{(4)}&\multicolumn{1}{c}{(5)}&\multicolumn{1}{c}{(6)}&\multicolumn{1}{c}{(7)}\\
                    &\multicolumn{1}{c}{\textbf{\begin{tabular}[c]{@{}c@{}}Efficacy\\index\end{tabular}}}&\multicolumn{1}{c}{\begin{tabular}[c]{@{}c@{}}Have power\\to improve\\HC services\end{tabular}}&\multicolumn{1}{c}{\begin{tabular}[c]{@{}c@{}}Can pressure\\health worker\\(effort)\end{tabular}}&\multicolumn{1}{c}{\begin{tabular}[c]{@{}c@{}}Can pressure\\health worker\\(timely)\end{tabular}}&\multicolumn{1}{c}{\begin{tabular}[c]{@{}c@{}}Can make village\\a better place\\to live\end{tabular}}&\multicolumn{1}{c}{\begin{tabular}[c]{@{}c@{}}Influence over\\gov. about\\health services\end{tabular}}&\multicolumn{1}{c}{\begin{tabular}[c]{@{}c@{}}Influence over\\HC about\\services provided\end{tabular}}\\
\midrule
Full treatment      &      -0.022   &      -0.034   &      -0.014   &      -0.032   &      -0.040   &      -0.025   &       0.008   \\
                    &     (0.023)   &     (0.028)   &     (0.033)   &     (0.038)   &     (0.032)   &     (0.031)   &     (0.028)   \\
Constant            &      -0.002   &       0.001   &      -0.009   &      -0.008   &       0.007   &      -0.001   &       0.001   \\
                    &     (0.015)   &     (0.021)   &     (0.023)   &     (0.026)   &     (0.023)   &     (0.020)   &     (0.018)   \\
\midrule
N                   &       7,288   &       7,288   &       7,288   &       7,288   &       7,288   &       7,288   &       7,288   \\
R$^{2}$             &       0.045   &       0.060   &       0.025   &       0.018   &       0.040   &       0.031   &       0.037   \\
Adjusted p-value (FT)&       0.515   &       0.632   &       0.787   &       0.632   &       0.632   &       0.632   &       0.787   \\
\bottomrule
\end{tabular}
\end{table}
